Ian Purcell, MD PhD
Clinical Neurologist · Otoneurologist · Inventor of the DizzyDoctor® System
Dr. Ian Purcell currently practices clinical neurology with an additional focus in otoneurology and headache management. He began the combined MD/PhD program in Neuroscience at the University of Texas Medical Branch in Galveston in 1989, joining the Vestibular Neurophysiology Laboratory of Adrian A. Perachio, PhD in 1991.
He received six years of funding from the NASA Graduate Training Grant and the Texas Space Grant Consortium as a principal investigator. As a neurophysiologist and aviator, he is interested in how sensory information related to gravity is encoded and processed by the vestibular system to control oculomotor and postural reflexes — and how that drives spatial orientation in three-dimensional environments.
Dr. Purcell is involved in the innovation of new vestibular technologies and actively publishes on the vestibular system, remaining at the forefront of diagnosing and treating vestibular dysfunction. His clinical work, research, and engineering all converge in the DizzyDoctor® system — the technology, education, and global outreach he has built around modern vertigo and balance care.





















